Critter id

[FullReefSurvivalMode]

Hello Follow Reefers,
Out of curiosity can you ID this little white transparent critter for me.
0,12 inch / 0,3 cm small round white ish Transparent critter. I have several in my mixed reef and every day I see them in a new spot, which means they’re mobile.
Simple question, Thx everybody

 

[Mikedawg]

Maybe a limpet

 

[FullReefSurvivalMode]

Thx think you’re right, hope they stay of my simple sps...

 

[Mikedawg]

I believe their diet is restricted to algae and diatoms and they are classified as reef safe - still bear watching I think